package com.zeroone.star.publish.utils;

import com.auth0.jwt.exceptions.AlgorithmMismatchException;
import com.auth0.jwt.exceptions.SignatureVerificationException;
import com.auth0.jwt.exceptions.TokenExpiredException;
import com.auth0.jwt.interfaces.DecodedJWT;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.zeroone.star.publish.utils.JwtUtils;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.HashMap;
import java.util.Map;
/**
 * @Author car
 * @Description //TODO 增加拦截器
 * @Date 10:02 2024/3/6
 **/
@Slf4j
public class JWTInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        Map<String, Object> map = new HashMap<>();
        // 获取请求头中的令牌
        String token = request.getHeader("token");
        try {
            if (token == null) {
                throw new Exception();
            }
            //验证令牌
            DecodedJWT verify = JwtUtils.verity(token);
            return true;
        } catch (SignatureVerificationException e) {
            //e.printStackTrace();
            map.put("msg", "无效签名");
        } catch (TokenExpiredException e) {
            //e.printStackTrace();
            map.put("msg", "token过期");
        } catch (AlgorithmMismatchException e) {
            //e.printStackTrace();
            map.put("msg", "token算法不一致");
        } catch (Exception e) {
            //e.printStackTrace();
            map.put("msg", "token无效");
        }
        map.put("state", "flase");

        //将map转为json
        String json = new ObjectMapper().writeValueAsString(map);
        response.setContentType("application/json;charset=UTF-8");
        response.getWriter().println(json);
        return false;

    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {

    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {

    }
}